MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  eqglact Structured version   Visualization version   GIF version

Theorem eqglact 19059
Description: A left coset can be expressed as the image of a left action. (Contributed by Mario Carneiro, 20-Sep-2015.)
Hypotheses
Ref Expression
eqger.x 𝑋 = (Base‘𝐺)
eqger.r = (𝐺 ~QG 𝑌)
eqglact.3 + = (+g𝐺)
Assertion
Ref Expression
eqglact ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → [𝐴] = ((𝑥𝑋 ↦ (𝐴 + 𝑥)) “ 𝑌))
Distinct variable groups:   𝑥, +   𝑥,   𝑥,𝐺   𝑥,𝑋   𝑥,𝐴   𝑥,𝑌

Proof of Theorem eqglact
Dummy variable 𝑔 is distinct from all other variables.
StepHypRef Expression
1 eqger.x . . . . . . 7 𝑋 = (Base‘𝐺)
2 eqid 2733 . . . . . . 7 (invg𝐺) = (invg𝐺)
3 eqglact.3 . . . . . . 7 + = (+g𝐺)
4 eqger.r . . . . . . 7 = (𝐺 ~QG 𝑌)
51, 2, 3, 4eqgval 19057 . . . . . 6 ((𝐺 ∈ Grp ∧ 𝑌𝑋) → (𝐴 𝑥 ↔ (𝐴𝑋𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)))
6 3anass 1096 . . . . . 6 ((𝐴𝑋𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌) ↔ (𝐴𝑋 ∧ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)))
75, 6bitrdi 287 . . . . 5 ((𝐺 ∈ Grp ∧ 𝑌𝑋) → (𝐴 𝑥 ↔ (𝐴𝑋 ∧ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌))))
87baibd 541 . . . 4 (((𝐺 ∈ Grp ∧ 𝑌𝑋) ∧ 𝐴𝑋) → (𝐴 𝑥 ↔ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)))
983impa 1111 . . 3 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → (𝐴 𝑥 ↔ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)))
109abbidv 2802 . 2 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → {𝑥𝐴 𝑥} = {𝑥 ∣ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)})
11 dfec2 8706 . . 3 (𝐴𝑋 → [𝐴] = {𝑥𝐴 𝑥})
12113ad2ant3 1136 . 2 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → [𝐴] = {𝑥𝐴 𝑥})
13 eqid 2733 . . . . . . . . 9 (𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥))) = (𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))
1413, 1, 3, 2grplactcnv 18926 . . . . . . . 8 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → (((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘𝐴):𝑋1-1-onto𝑋((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘𝐴) = ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘((invg𝐺)‘𝐴))))
1514simprd 497 . . . . . . 7 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘𝐴) = ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘((invg𝐺)‘𝐴)))
1613, 1grplactfval 18924 . . . . . . . . 9 (𝐴𝑋 → ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘𝐴) = (𝑥𝑋 ↦ (𝐴 + 𝑥)))
1716adantl 483 . . . . . . . 8 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘𝐴) = (𝑥𝑋 ↦ (𝐴 + 𝑥)))
1817cnveqd 5876 . . . . . . 7 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘𝐴) = (𝑥𝑋 ↦ (𝐴 + 𝑥)))
191, 2grpinvcl 18872 . . . . . . . 8 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → ((invg𝐺)‘𝐴) ∈ 𝑋)
2013, 1grplactfval 18924 . . . . . . . 8 (((invg𝐺)‘𝐴) ∈ 𝑋 → ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘((invg𝐺)‘𝐴)) = (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)))
2119, 20syl 17 . . . . . . 7 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → ((𝑔𝑋 ↦ (𝑥𝑋 ↦ (𝑔 + 𝑥)))‘((invg𝐺)‘𝐴)) = (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)))
2215, 18, 213eqtr3d 2781 . . . . . 6 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → (𝑥𝑋 ↦ (𝐴 + 𝑥)) = (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)))
2322cnveqd 5876 . . . . 5 ((𝐺 ∈ Grp ∧ 𝐴𝑋) → (𝑥𝑋 ↦ (𝐴 + 𝑥)) = (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)))
24233adant2 1132 . . . 4 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → (𝑥𝑋 ↦ (𝐴 + 𝑥)) = (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)))
2524imaeq1d 6059 . . 3 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → ((𝑥𝑋 ↦ (𝐴 + 𝑥)) “ 𝑌) = ((𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)) “ 𝑌))
26 imacnvcnv 6206 . . 3 ((𝑥𝑋 ↦ (𝐴 + 𝑥)) “ 𝑌) = ((𝑥𝑋 ↦ (𝐴 + 𝑥)) “ 𝑌)
27 eqid 2733 . . . . 5 (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)) = (𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥))
2827mptpreima 6238 . . . 4 ((𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)) “ 𝑌) = {𝑥𝑋 ∣ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌}
29 df-rab 3434 . . . 4 {𝑥𝑋 ∣ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌} = {𝑥 ∣ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)}
3028, 29eqtri 2761 . . 3 ((𝑥𝑋 ↦ (((invg𝐺)‘𝐴) + 𝑥)) “ 𝑌) = {𝑥 ∣ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)}
3125, 26, 303eqtr3g 2796 . 2 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → ((𝑥𝑋 ↦ (𝐴 + 𝑥)) “ 𝑌) = {𝑥 ∣ (𝑥𝑋 ∧ (((invg𝐺)‘𝐴) + 𝑥) ∈ 𝑌)})
3210, 12, 313eqtr4d 2783 1 ((𝐺 ∈ Grp ∧ 𝑌𝑋𝐴𝑋) → [𝐴] = ((𝑥𝑋 ↦ (𝐴 + 𝑥)) “ 𝑌))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 397  w3a 1088   = wceq 1542  wcel 2107  {cab 2710  {crab 3433  wss 3949   class class class wbr 5149  cmpt 5232  ccnv 5676  cima 5680  1-1-ontowf1o 6543  cfv 6544  (class class class)co 7409  [cec 8701  Basecbs 17144  +gcplusg 17197  Grpcgrp 18819  invgcminusg 18820   ~QG cqg 19002
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5286  ax-sep 5300  ax-nul 5307  ax-pow 5364  ax-pr 5428  ax-un 7725
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-ral 3063  df-rex 3072  df-rmo 3377  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3779  df-csb 3895  df-dif 3952  df-un 3954  df-in 3956  df-ss 3966  df-nul 4324  df-if 4530  df-pw 4605  df-sn 4630  df-pr 4632  df-op 4636  df-uni 4910  df-iun 5000  df-br 5150  df-opab 5212  df-mpt 5233  df-id 5575  df-xp 5683  df-rel 5684  df-cnv 5685  df-co 5686  df-dm 5687  df-rn 5688  df-res 5689  df-ima 5690  df-iota 6496  df-fun 6546  df-fn 6547  df-f 6548  df-f1 6549  df-fo 6550  df-f1o 6551  df-fv 6552  df-riota 7365  df-ov 7412  df-oprab 7413  df-mpo 7414  df-ec 8705  df-0g 17387  df-mgm 18561  df-sgrp 18610  df-mnd 18626  df-grp 18822  df-minusg 18823  df-eqg 19005
This theorem is referenced by:  eqgen  19061  cldsubg  23615  tgpconncompeqg  23616  snclseqg  23620  pzriprnglem10  46814
  Copyright terms: Public domain W3C validator